﻿<html>
<head>
<script type="text/javascript">
function open_win() 
{
window.open("http://www.baidu.com/")
window.open("http://www.w3school.com.cn/")
}
</script>
</head>

<body>
<form>
<input type=button value="打开窗口" onclick="open_win()">
</form>
</body>

</html>